Cutter



Aug. 28, 1934. T, RiORDAN 1,971,428

CUTTER Filed Jan. 4, 1953 Inventor 6 1/4 jf 7". G Riordan Patented Aug. 28, 1934 "U'NITE 'D STATES PATENT orrlce 2 Claims.

The present invention relates to new and useful improvements in cutters and has for one of its important objects to provide, in a manner as hereinafter set forth, a cutter embodying a -5 novel construction whereby said cutter is particularly adapted for use in removing excess rubber from swollen printing rollers, although it is understood, of course, that the cutter may be used for any purpose for which it may be found adapted.

Other objects of the invention are to provide a cutter of the aforementioned character which will be simple in construction, strong, durable, highly efficient and reliable in operation and which may be manufactured at low cost.

All of the foregoing and still other objects and advantages of the invention will become apparent from a study of the following specification, taken in connection with the accompanying drawing wherein like characters of reference designate corresponding parts throughout the several views, and wherein:-

Figure 1 is a view in sideelevation of a cutter assembly in accordance with the present invention.

Figure 2 is a sectional view, taken substantially on the line 2-2 of Figure 1.

Figure 3 is a fragmentary view of a portion of one of the cutters, looking in the direction of the arrow a. in Figure 2.

Figure 4 is a detail view in section, taken substantially on the line 4--4 of Figure 3.

Figure 5 is a perspective view of one of the cutters.

Referring now to the drawing in detail, it will be seen that the reference numeral 1 designates a circular head which is provided with a central opening 2 for the reception of a driving arbor or shaft. The head 1 is provided with a series of spaced sockets 3 extending radially thereinto from the periphery thereof for the reception of removable cutters, which are designated generally by the reference numeral 4.

Each cutter 4 comprises a shank 5 with the outer end of which a substantially tangentially extending head 6 is integral. The outer end of the head 6 is rounded while the inner end thereof is formed to provide a shoulder '7 for abutting engagement with the periphery of the head 1. The head 6 is further provided with a circular opening 8 for the passage of cuttings. On one side and on its outer portion, the head 6 is further provided, on its leading edge, with a series of teeth 9 of a construction which is best seen in Figures 3 and 4 of the drawing. As will be seen from Figures 3 and 4, the teeth are of V-shape and are beveled on their inner faces, with the sloping walls of the beveled parts extending inwardly on the wall of the opening 8, well beyond the 6 V-shaped portions of the teeth. As will be seen from Figure 2, the arcuate row of teeth extends from a point on one side of the head to a point slightly beyond the axis of the cutter.

The shank 5 of each cutter 4 is provided, in

one side, with a recess 10 which receives a set screw 11, said set screw being threaded into one side of the head 1. The set screw 11 has extending thereinto from its outer end a polygonal socket 12 for receiving a suitable actuating tool, such I as a wrench. It may also be well to mention that the sockets 3 and the shanks 5 are polygonal.

In use, it has been found that the cutters 4, by reason of the novel construction thereof, will cut the live rubber of swollen printing rollers rapidly and evenly without stretching or pulling said rubher or causing the heating thereof. As previously stated, the cuttings pass through the openings 8, thereby preventing clogging. Of course, the members 4 may be expeditiously removed by simply loosening the set screws 11, as will be apparent.

It is believed that the many advantages of a cutter constructed in accordance with the present invention will be readily understood, and although the preferred embodiment of the invention is as illustrated and described, it is to be understood that changes in the details of construction and in the combination and arrangement of parts may be resorted to which will fall within the scope of the invention as claimed.

Having thus described my invention, what I claim as new is:

\1. A device of the class described comprising a circular member having radial sockets in its periphery, a plurality of cutters, each having shank fitting in a socket and a substantially tangential forwardly extending head, each head forming a shoulder at its point of junction with the shank, the shoulder engaging a part of the periphery of the member, the outer end of the 190 head being rounded at right angles to the line of movement of the cutter and said head having a circular opening passing from its front face to its rear face, said head having forwardly extending teeth on a portion of the wall of the head between the opening in the head and one side of the head, said teeth being of V-shape and having their inner faces beveled, the outer faces of the teeth forming continuations of the outer side of the head.

2. A cutter of the class described comprising a .1

wardly extending V-shaped teeth on its front edge, said teeth having their inner faces beveled, with the beveled parts extending beyond the V-shaped portions of the teeth and through the wall of the opening and said teeth being arranged in an arcuate row extending from one side of the head to a point slightly beyond the axis of the cutter.

THOMAS G. RIORDAN. 

